Oscillating sander



Oct. 11, 1932. J. P. MONSON ,OSCILLATING SANDER 3 Sheets-Sheet 1 Filed July 7, 1930 w -4 .IHE

XNVENTOR Lhhn 131110125011 ATTORNEY 5 Sheet s-Sheet 2 iNVENTOR ATTORNEYS Jabn RMbzzsazz J. P. MONSON OSCILLATING SANDER Filed July 7, 1950 Oct. 11,

Get. 11, 1932. J, P MQNSQN 1,881,839

OSCILLATING SANDER Filed July '7, 1930 3 Sheets-Sheet 5 if I xNvENToR John E Max:501:

ATTORNEYS Patented Oct. 11, 1932 l v UNITED STATES PATENT OFFICE-f Joim r. Morison, OF-ANN Anson, ivrrcnreaiv b SUILLATING' SANDER V Ap plicatioii filed July 7. 1930. Serial 'No. 466,156. g p The present invention pertains to a novel line 3 3 of'F 1 and illustratingthe drivrotary sanding machine of the type having ing mechanism in detail;

an oscillating sanding tool. 7 Fig. 4 is a cross sectional view taken sub- The primary object of the present invenstantially along the line 44, of Fig. 1, the

. tion is to devise a sanding machine having adapter and the sanding drum being shown 55 a worksupporting table to which the work in top plan;

may be fixed the table being designedto ro- F ig. 5 is across sectional detail: taken on tate and tilt to any desired angle to permit the l1ne-5-5 of Fig. 2; the work to be moved by the table into con- Fig. 6 is a cross sectional detail takenon tact with the tool. This feature constitutes the line 6-6 of Fig. '3; i r 60 a decided improvementover theconventional Fig. 7 is a side elevation illustrating the type of sanding machines in which the work table clamping and indexing mechanism; is held by the hand of the operator, making Fig. Sis a side elevation of oneof the table accurate surfacing an operation of the great-. supporting members, and f est skilland which'is obviously not fool proof F 9 is a side elevation of the member 65 for any slip by the operator might bringhis which slidably supports the entire'tab'le suphands in contact with the tool. In other porting mechanism. 1 words the present device is equipped'with Like characters are employed throughout means givinga greater safety factor than. to designate the corresponding parts;

was heretofore possible. The numeral 1 indicates a base which may 70 Another object of the present invention is be formed ofan enlarged solidpiece of'metal V to provide a novel sanding machine having a or. may be of the type which-maybe secured rotatable and tiltable work supporting table permanently to the floor. An upright post. 2 mounted and operated in combination with 'is secured in the base and has a head'3ata novel tool driving mechanism. The rotary tached to the upper end thereof, the head '75 driving mechanism is designed to cause osbeing provided with a table-like upper surcillation and rotation of the sanding drum face having ways 4 formed thereon. Slidmounted upon the upper end thereof and is able upon the head 3and guided by the Ways constructed so that all the moving parts may 4 is mounted a stirrup member 5, a side ele be enclosed in a casing in such a manner that vation of which is shown in Fig. 9. The stir- 80 they may be adequately lubricated by being rup member is provided with a screw-threadsubmerged in a bath of oil. The'oscillation ed bore 6 in which is received a'set'screw 7 as well as the rotation gives a smoother and V to engage the ways 4-to prevent movement of more satisfactory surface on the work by "the stirrup on the head after the adjust n preventing grooving and at the same time f h f has p made; To assist in 85 increases the useful life of the sanding drum h dl there IS p j l f b y by evenly distributing thewear thereon. graduated Scale h stlrrup whlch 9 R With the above and other ends in view the Grates Wlth the plndlcatlng g r 10 Q the invention consists in the matters hereinafter 1 :l if d f h i set forth and more particularly pointed out are pi g i zg-z i g fggg fifi a i 1n the appended claims, reference being had Wardly projecting arms 12 in which are to h f f g drawings m Whlch formed bores 13. The stirrup is designed Flgaure 1 1S a from of the P s to support the split ring 14 having the bores. gl a 15 which correspond with the bores 6 in] the r 1g. 2 1s a side elevatlon of the. machine Stirrup so that bolt may be gh W1t11 l5hQ Work PP table broken ay both sets of said bores to-mountthering 1 l- 211162.111 CTQSS 560131011; inside the stirrup. The ring, is providedwith l 1g. 3 is an enlarged cross sectional view a pair ofdownwardly projecting" curved arms 7 of a fragment of 111130111116 ak n n the 16 having the curved slots 17 to accommodate 9 set screws 18 which are passed through the bores 13 in the stirrup members arms 12.

From the above description it becomes apparent that the ring 14 is tiltably mounted screw 24 is passed to tighten the ring'around the flange 21. The set-screw 23 may be tightened to provide a snug'fit for the flange 21 in the ring-14 to permit rotation of the table or it may be tightened to such an extent that rotation of the table may bepreventedif such, may be desired. A suitable work clamping member 25 is secured in conventional ways 26'formed upon the upper face of the work supporting table. 5 I

Around the upper portion of the bore 20 in the table is provided a counter bore 27 which receives a flange 28 formed on an adapter 29 which is inserted in the bore 20. The purpose of the adapter is to permitthe table'to have a comparatively large sized bore which will accommodate sanding drums of various 'diameters but it becomes apparent that if a small sanding drum were used with alarge bore 20 that it would be impossible tosand small piecesjof work. Therefore this invention accommodates adapters of standard outer dimensions having elongatedslots to accommodate drums of various sizes while the work supporting table is at various angles relative to the grinding drum.

To indicate the angularityof the work supporting table there is provided a graduated plate 63 secured to the bottom of-the. curved arm 16 on the ring 14, an indicatingarm 64 being carried by the arm 12 on the member ,5to cooperate therewith. For supporting the table in a horizontal plane there is provided an adjustable screw 62, carried by the member 5 and projecting upwardly to provide a positive stop for the table asit tilts in itsring support which is'pivotally mountedin the stirrup member 5.

A plate 30 is provided with 31' to partly surround the post 2'and straps 32 are secured to these arnis to firmly attach the plate to the post. To the plate 30 is secured a casing 33 having suitable packing 34 at both top and bottom and having bearings and bearing'races as indicated by the numeral 35. The packing in the upper end of the casing .is spaced on. either side of the bearings and this portion ofthe casing is provided with a lubricating fitting 36, the necessity for special lubricationatthis point becoming apparent as the desoriptionprogresses. The lowerportion of the casing is filled with lubricant by meansof the lubricating fltting'37.

easing.

and by additional bearings 46 mounted in a bracket 47 formed on the inside of said The lower end of the shaft projects beneath the casing and is connected as "at 48 to an electricmotor 49 secured by bolts 50 upon the plate 30.

Mounted upon the shaft 45 and spaced by spacers 51 between-the bracket 47 and the bottom of the casing is the worm 52, keyed to rotate with said shaft. The worm 52 meshes with a wormgear 53 which-is keyed to a shaft 54 mounted in brackets 55 formed on the in- 5 side of the bottom of said casing. N heels 56 are secured upon the outerends of saidshaft 54 and are provided with bolts 57 for attaching links 58 to said wheels in a concentric manner whereby the wheels serve as cranks forcing; said; linksnpwardly and 7 down wardly. V ,7 V

The upper ends of said links are pivotally attached as at 59 to a ring 60 which surrounds the shaft 39 and butts against the upper end of the enlarged portion 40 against which it is held by a securing ring 61. 1 Therefore, when the shaft 45 is rotated by the motor 49 the drum upon the upper end of the shaft is'also rotated .by connection established by the key 44 and the bore 42. Rotation of the shaft 45 also causes rotation of the worm gear 53, causing rotation of the shaft 54 and thereby causing the links 58 to successively raise and lower the shaft 39 by means of the ring 60 which is secured to the shaft. The upward and downward movement causes oscillation of the sanding drum on the shaft 39 while the rotary driving connection remains established due to the manner in which the shaft 45 projects into the bore 42.

Although a specific. embodiment of "the present invention has been illustrated and described it is to be understood that various changes may be made within the scope of the appended claims without departing from the spirit of the invention and such changes are contemplated.

What I claim is:

1. The combination with a sanding drum,

of means for rotating and oscillating said drum, and a rotatable work supporting table mounted upon a tiltable and slidable support in a manner whereby said sanding drum extends through an opening in said table.

2. The combination with a sanding drum, ofmeans for rotating and oscillatingsaid drum, a rotatable work supporting table having an opening therein through which said M3 sanding drum extends and mounted upon a tiltable and slidable support, and means for clamping Work upon said table.

3. The combination with a sanding drum having means for rotating and oscillating the same, of a table having an opening therein through which said sanding drum extends and adapted to support work in contact with said drum, said table being adapted to; slide longitudinally, to tilt angularly and to rotate relative to said sanding drum.

4. The combination with a sanding drum having means for rotating and oscillating the same, of a table having an opening therein through which said sanding drum extends and adapted to support work in contact with said drum, said table being adapted to slide longitudinally, to tilt angularly and to rotate relative to said sanding drum, and means for clamping work upon said table.

5. The combination with a sanding drum of means for rotating and oscillatin said drum, and means for mounting a wor supporting table with said drum projecting therethrough, said table being adapted to slide longitudinally, to tilt angularly and to rotate relative to said sanding drum.

6. A sanding machine comprising a vertical post supported by a suitable base, a head having guiding ways mounted upon the upper end of said post, a stirrup member slidable in said ways on said head, a ring piv' otally mounted in said stirrup, a work supporting table supported in said ring, a sanding drum projecting through said work supporting table, and means for oscillating and.

rotating said drum.

7 A sanding machine comprising a vertical post supported by a suitable base, a head having guiding ways mounted upon the upper end of said post, a stirrup member slidable in said Ways on said head, a ring pivotally mounted in said stirrup, a work supporting table supported in said ring, clamping means for securing work upon said table, a sanding drumprojecting through said work supporting table, and means for oscillating and rotating said drum.

8. The combination with a work supporting table adapted to be adjusted by rotary, longitudinal and angular movement, a motor driven telescopical shaft, a sanding drum mounted upon the upper end of said shaft, and means actuated by the rotation of the lower portion of said telescopical shaft for causing oscillation of the upper portion carrying the sanding drum. 7

9. The combination with a work supporting table adapted to be adjusted by rotary,

longitudinal and angular movement, of a lubricant containing casing mounted adjacent said table, a motor driven telescopical shaft mounted in said casing, a sanding drum for causing oscillation of the upper portion carrying the sanding drum.

10. A sanding machine comprising a ver tical post supported by a suitable base, a head having guiding ways mounted upon the upper end ofsaid post, astirrup memberv said post, a sanding drum mounted upon the upper portion of said shaft, and means actuated by rotation of the lower portion of'said shaft for causing oscillation of the upper" drum supporting portion.

In testimony whereof J. P. MONSON.

I aflix' my signature.

mounted upon the upper portion of said shaft, and means actuated by rotation of I the lower portion of said telescopical shaft tor driven telescopical shaft supported by 5 p 

